I have many Encore Azaleas. When I plnat them they are full, green and beautiful. Once they're in the soil they gradually thin out.I have planted them with an Asalea soil in the hole.
I have a soil with a pH of 7.00 excess phosphorus(130 ppm), calcium (3489ppm) Magnesium(159ppm). I think I need to lower the pH and reduce concentration of phosphorus.WHat the best approach to accomplish that? Any other thoughts would also be appreciated. Thank you.